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<div class="titlepage"><div><div><h5 class="title">
<a name="beast.ref.boost__beast__http__parser.on_chunk_body"></a><a class="link" href="on_chunk_body.html" title="http::parser::on_chunk_body">http::parser::on_chunk_body</a>
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<p>
          <a class="indexterm" name="idm44861272384512"></a>
        </p>
<p>
          Set a callback to be invoked on chunk body data.
        </p>
<h6>
<a name="beast.ref.boost__beast__http__parser.on_chunk_body.h0"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__http__parser.on_chunk_body.synopsis"></a></span><a class="link" href="on_chunk_body.html#beast.ref.boost__beast__http__parser.on_chunk_body.synopsis">Synopsis</a>
        </h6>
<pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
    <span class="keyword">class</span> <span class="identifier">Callback</span><span class="special">&gt;</span>
<span class="keyword">void</span>
<span class="identifier">on_chunk_body</span><span class="special">(</span>
    <span class="identifier">Callback</span><span class="special">&amp;</span> <span class="identifier">cb</span><span class="special">);</span>
</pre>
<h6>
<a name="beast.ref.boost__beast__http__parser.on_chunk_body.h1"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__http__parser.on_chunk_body.description"></a></span><a class="link" href="on_chunk_body.html#beast.ref.boost__beast__http__parser.on_chunk_body.description">Description</a>
        </h6>
<p>
          The provided function object will be invoked one or more times to provide
          buffers corresponding to the chunk body for the current chunk. The callback
          receives the number of octets remaining in this chunk body including the
          octets in the buffer provided. The callback must return the number of octets
          actually consumed. Any octets not consumed will be presented again in a
          subsequent invocation of the callback. The implementation type-erases the
          callback without requiring a dynamic allocation. For this reason, the callback
          object is passed by a non-constant reference.
        </p>
<h6>
<a name="beast.ref.boost__beast__http__parser.on_chunk_body.h2"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__http__parser.on_chunk_body.example"></a></span><a class="link" href="on_chunk_body.html#beast.ref.boost__beast__http__parser.on_chunk_body.example">Example</a>
        </h6>
<pre class="programlisting"><span class="keyword">auto</span> <span class="identifier">callback</span> <span class="special">=</span>
    <span class="special">[](</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">uint64_t</span> <span class="identifier">remain</span><span class="special">,</span> <span class="identifier">string_view</span> <span class="identifier">body</span><span class="special">,</span> <span class="identifier">error_code</span><span class="special">&amp;</span> <span class="identifier">ec</span><span class="special">)</span>
    <span class="special">{</span>
        <span class="comment">//...</span>
    <span class="special">};</span>
<span class="identifier">parser</span><span class="special">.</span><span class="identifier">on_chunk_body</span><span class="special">(</span><span class="identifier">callback</span><span class="special">);</span>
</pre>
<h6>
<a name="beast.ref.boost__beast__http__parser.on_chunk_body.h3"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__http__parser.on_chunk_body.parameters"></a></span><a class="link" href="on_chunk_body.html#beast.ref.boost__beast__http__parser.on_chunk_body.parameters">Parameters</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody><tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">cb</span></code>
                  </p>
                </td>
<td>
                  <p>
                    The function to set, which must be invocable with this equivalent
                    signature:
                  </p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span>
<span class="identifier">on_chunk_header</span><span class="special">(</span>
    <span class="identifier">std</span><span class="special">::</span><span class="identifier">uint64_t</span> <span class="identifier">remain</span><span class="special">,</span>       <span class="comment">// Octets remaining in this chunk, includes `body`</span>
    <span class="identifier">string_view</span> <span class="identifier">body</span><span class="special">,</span>           <span class="comment">// A buffer holding some or all of the remainder of the chunk body</span>
    <span class="identifier">error_code</span><span class="special">&amp;</span> <span class="identifier">ec</span><span class="special">);</span>            <span class="comment">// May be set by the callback to indicate an error</span>
</pre>
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      Falco<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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